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Old 05-07-2013, 08:39 PM   #1
Duckmasterlack's Avatar
Join Date: Apr 2013
Location: Shelbyville, KY
Posts: 61
Body Mount Rust Help

Okay on my 99 Sport I was crawling around underneath for the first time sine I bought it. Well everything is in great shape except for two spots where my body mounts to the frame. This is located on the driver side about center with the

Is this a common problem and is there a fix. Is this a serious safety issue or can I let it slide for a little while. This isn't my DD so I can work on it when I have the time. I have a little metal working experience and not afraid to grab a grinder and a mig welder.

Thanks for the help.

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Old 05-08-2013, 07:05 PM   #2
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Join Date: Apr 2013
Location: Shelbyville, KY
Posts: 61
Since no one has responded to my post here I guess it can be one of three things I am the only one with this problem, this is a lost cause or am I beating a dead horse.

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Old 05-08-2013, 07:14 PM   #3
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Join Date: Nov 2009
Location: new jersey
Posts: 1,037
That's more then rust there is a whole in the frame. It is coo on for them to rust but more in the rear. U need to clean it up ASAP and weld in a piece to replace that mess or it it spread.
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Old 05-08-2013, 07:17 PM   #4
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Location: Northeast Ga. Mountains
Posts: 1,100
Make sure to check where the transfer case skid mounts to the frame, you could end up with this:

Attachment 246798
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Old 05-08-2013, 08:31 PM   #5
Duckmasterlack's Avatar
Join Date: Apr 2013
Location: Shelbyville, KY
Posts: 61
Thanks guys is there a kit I can buy and cut the old sections out and weld in new ones or will I need to make something out of flat bar. I was aware the rear was prone to rust everything else on this jeep is solid even the body. This is the only place I have anything other than surface rust.

Kshaws I actually need to drop my transfer case skid pan soon as I have a 2 bolts on my transmission pan that were striped by the PO. After doing a little research on doing so and I don't know if I want to run the risk of breaking the nuts off the frame. I plan on making a new thread on that subject.
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Old 05-08-2013, 11:05 PM   #6
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Join Date: Apr 2012
Location: Amesbury, MA
Posts: 218
Having done something very similar to this, I would like to weigh in. First, it looks like your frame is is good shape. What I see is rust on the underside of your tub (body). Your body mounts look good as well. Have you tried to loosen any of your body mount bolts yet? This could give you an indication as to any rust you may have inside the tub, where the bolts thread into.

At the least I would poke around and chip away all of the scale and rust to get the best look at what you are dealing with. If you're lucky, you can weld a plate over that section, and call it a day. Good luck.


2002 Sport, for waves & woods,...and winter.
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